Martha Casillas, 39, is pictured with her three children, ages 22, 13, and 6, in an undated family photo. Casillas was killed Sept. 7, 2013 allegedly at
Martha Casillas, 39, is pictured with her three children, ages 22, 13, and 6, in an undated family photo. Casillas was killed Sept. 7, 2013 allegedly at the hands of her estranged husband Mario Chavez, 40, who has been charged with murder. ( Katia Chavez )